Those who have astral traveled...

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Is it scary? What's it like? I've been trying for a while and with no success I've found a brainwave generator with an astral projection enhancer preset.

I want to know but my mind is afraid, I can't bring myself to do it, is that good or bad?

If it scares you let it go for a while, it's not good to force your way into this.
And there are many other ways to 'travel' or to investigate perception.

You can use your merkabah or diamond body to travel, by speeding up this light body. Nothing can harm you.
You can project yourself through your third eye to another place or time. Use crystals / magnets in the beginning.
You can 'walk' along your life, just by imagining a line in front of you, a line of light with dots (presenting) years on it and step on that line.
You can meditate, go upwards 'till the earth is a small dot, and 'land' somewhere again.
You can do shamanic traveling

All ways to investigate and learn about perception, it's basically shifting your perception and/or broadening your perception.